Accession Number : AD0753946

Title :   Coordinate Measurement Research: Basic and Applied Experiments with the Negative-Reticle Concept.

Descriptive Note : Final technical rept.,

Corporate Author : STATE UNIV OF NEW YORK SYRACUSE COLL OF ENVIRONMENTAL SCIENCE AND FORESTRY

Personal Author(s) : Hescock,Jonathan C. ; Klotz,Ronald P. ; Brock,Robert H.

Report Date : AUG 1972

Pagination or Media Count : 200

Abstract : Experiments with the negative-reticle concept are extended on both the basic and applied levels. This concept utilizes a measuring mark which is as close to the negative of the target as possible. The result is maximum edge information and pointing stimulus. Part 1 of the study describes a basic measuring experiment which is conducted with an apparatus having a least count of 0.04 seconds of arc. The results showed a precision approaching 0.1 seconds of arc, and the experimental parameters from greatest to least concern were observer, target density, reticle density, target shape, observing illumination, and X and Y coordinate values. Part 2 of the study employed a standard comparator. Photographic images were measured with both a negative-reticle and a standard cross-reticle. The negative reticle yielded measurements which were more consistent and precise. (Author)

Descriptors :   (*PHOTOINTERPRETATION, *PHOTOGRAMMETRY), PHOTOGRAPHIC IMAGES, OPTICAL IMAGES, RESOLUTION, RETICLES, COMPARATORS, PERFORMANCE(HUMAN), VISUAL ACUITY, ANALYSIS OF VARIANCE

Subject Categories : Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE